Door lock



. Jan- 9, 1945- H. E. FENDRING 2,366,847

DOOR LOCK Filed oct. 4,1941

" Patented Jan.` 9, 1945 liA@neannitiewliea4, 194,1,tsriai@melanie` i y p p p solaires.

:@Myzpresentinvention relates toslocksfonidoors and theiilre.` i

.One :of the `principal subjects 'of :this lrinvention is to provide a door lockin@whichtheiloeki ingqfbolt, :which cistmsually aprovided :.t-hettdoor itselfgis: constructed tol'.:he;frnounted inf the `door :a andzaalsoto opnoyide :.rlalllockzin' which" :the loek isis so c eonstruc'itedl :that 'i the molt-receiving ,epening; is inormal'lycc'lesedf:orrcoveredswhemthe fdoorlisrjopen.

Anotheriimportant objectfsof Athis?inyezntionois to: provide ailockfmhich; risiso' constructedtmhatua bolt-ejector innthefkeepen 'resilientlyrlieldfiush swith theiace ofitherkeeperuand whichservesvas env-shock ial)sorbemimenthe'.1holtl entersrthwkeeper opening; resulting in absorptioniofthe shockiwhen theaoutwardly forcedzboltenters-thekceper openling, thereby nesultin'gt in aan fextremely g silent lock. l

aAni 4importanti objeotaalso: .of :this ,inventionifis to provide zaglrlock which :the i :spindle "for the lock;operatingrmembei'is:entiizely:separaterom :the loclc mechanism,vor:loekejecmngqmechanism,

thereby providing a lock'mhichrzmay `iloefrealcllily installed vwithout "ftheA neoessitykiof accurately fFig. 2 ,is 4assimilar` sectional lvew` :thereof :with the doorin ia-closed position,fl-but showing-por# tions; off` the :mechanism `broken away; y

eilig.. 3is anfeleyational viewtaken, at3f3 yof" Fig. 2 showing the outside of thexboltfandzbolt housingfcin the door jamb;

` `ofthedoor; and, y

:aligning ther spindleimith ithe @other r portion s of p n thewmechanism. y 'y y y A? still: iurthert'iimportanti iobje'ctvl off lthis inventioni-ist-to `:proyidesa :compression lockrfwhichifis l smconstructediarrd arranged-:thatitmaybe'made largely o-fgplasticsmaterialsgorifrom, whatiis `known as, plastics. p i eli-:iurthenobjecttrofx thisginvention'is toqlprovide y ralf-door vloek: haviingzai inev'elfiandl simplefilockng mechanismat Fone;sideuo-f,L afldoor,v land-also` novel incansfor mocking theisame fnom `theopposite s1 e. y v

f Af 'still urthen iobjiectriofrthis s-invention: isto provide a door lock which onzthewholesiswvery i simple and economical of constructiongidurable,

andwwhich willznotfreadfily ideteriorate or get out t y With thesesiand eothergobjectswinzvieW,fI^have devised ,agdoon loekehaving certainl novell featuresl of .fconstnuctiom ccembination, :arid iarrangement oi?.pantsnandz'portions,iaszziwill loe` hereinafter de- .scribed irinlfdetail andi-particularly 4-fsetiorth in thefappendedeiaims; reference being'l'rad to the `accompanying:drawing and tocharacters of refference thereonf` which-orm a partof` 'this apl plication, in which:

1 is atfragmentary sectionalview in` plan rof-a'lazidoor.` ambgandrthe rcorrespondingfreele'dge oiiandoozp-1 showing zgportionscof: myl 'lockingmeen` .an-ismfymountedzin each; l

;.Fig`s.:5,r6, and' 7, are` sectional views takenfyrespectively,'throughS-Bi-G-, and 'l-flgofrFgt-Z. @ne `of i theI principal Vobjects ofV this` :invention isrtomrovide; a` door `lock `which maywbefreadily and economically, made ci" a plastic lnuateriaLand the following description of` my'lockwwill @be more readilyziunderstood ifv suon-construction ismkept y Theledoorbolt` I1 is of rectangular"crossfsection, orx'ofr round cross-section withsa:` flattened `side, andis :reciprocally wmounted in a housing; 2 which may also be-.of similar` crossesection. Thehol-n lowportion f2@ of .the y housing in` which `the' `bolt recipnocatesi isffinserted iny a ro-und hole 'Jll of the fjambsJ. .The housing V-is provided withwazse-` curing jplate 2b at `its:outeiwsend, wherebyn-the housing szmay i be -secured to the .i door jamldleby screws :3. The bolt al` is fforeed outwardly,` lso that nits louter end extends beyond `theecuring;.plate 2P, `ley-means of wa `compression t spring l4. 'IlieA spring; is positioned `around the rreduced shankI lauf the bolt, which extends' backwardly from the outer; portion,-and between theinner end of the `outer @portion of the bolt and the inner i end ofthe'liolloweportion 2"` of the housing. The

i -boltrisvheld vin place, -or limited in itsroutward movement,` byfa shoulder `at the innerendzof the shank` la.

means of iacetone, this collar being; held inflengagementv withtlre inner end Lof ,the housing 22, byftheispringA. i .Theoiuter end ofrthe bolt is bevelled orrounded, `as inthe usual bolt construction. i 1

LThe elements" of the above bolt, construction aremade of plastic "except/the` screws 3 `and the spring-J4. y y y 1 Intheefree :edgerof: the door D lis provided-Ja keeper |I-having an opening IIB for `receiving thetfbevelledyportion zof the bolt. The forward iportionzofthe keeper, whichwnormally engages n .the iboit, isslightlyrounded, `providing the strike Yplate Iportionl I lb. `This keeper or strike plate is i secured in position in the free edge of `the door V b'yrscrewsflz.` "Ilhe keeper or strike plate has an inwardlyextending tubular ejector housing l 3, inpw'hiclr s yreciprocallyA mounted Athe ejector 14.

Thisishoulder is formed bywmeans 'oiga-collar 5-w'hichnissecuredto the shankzby This ejector housing is inserted into a hole D1 at the edge of the door D.

The keeper opening IIa is coincident with or is located at the outer end of the bore or interior I3a of the housing I3. The head I4a of the ejector I4 may be of a cross-section similar to but slightly larger than the bolt and is normally located within the keeper opening I la. The head of the ejector is adapted to enter the outer end of the bore I3. The ejector has a centrally located and backwardly extending tubular shank Mb.' Near the inner end of the bore is a constricted portion or wall I3b having a circular hole through which the shank I4b extends. The opposite sides of this constricted portion provide shoulders, as will be described hereinafter. Around the shank I 4b 'is a compression spring I5 which is located vbetween the head Ille and the adjacent shoulder of the wall I3b. The spring I5 urges the outer face of the head flush with the outer side of the keeper or strike plate. Such outer position of the ejector is limited by a collar I4c near the inner end of the shank I4b, this collar engaging the inner side of the shoulder of the wall I'3b.

The compressive strength of the spring I5, when the ejector is forced outwardly, may be approximately two ounces (2 oz.), and, when forced inwardly bythe bolt, it is approximately five ounces (5 02.). The normal expanded compressive strength of spring 4 is slightly greater, and maybe six ounces (6 oz.). Thus, the spring I5 will be `compressed by the spring `4, but the ejector will absorb the shock of the bolt I when the latter is forced outwardly from the bolt housing into the keeper I I.

When the door D is closed and the bolt I is lodged in the keeper I I, the door may be unlocked, or the bolt ejected from the keeper, by suitable operating means which may be the usual door knobs 2| and 22. These knobs are connected by a. square spindle 23 which extends through a transverse hole D2 in the door inwardly from the hole D1 in which the ejector housing I3 is located. The knobs 2| and 22 and the spindle 23 are roe tatably mounted on the escutcheon plates 24 and 25 at the opposite sides of the door. The spindle 23, which may be of square cross-section, is pro; vided with a lock-operating crank portion 2?su which may be located in the middle between the opposite sides ofthe door.- This crank portion is Y connected with the ejector by means of a tumbler 26 which has a thrust plate 26a at its outer end and a small diameter shank 26b which extends into the rear end of the hollow shank I4bof the ejector I4. The thrust plate is normallyheld against the inner side of the throw portion 23a' The spring is centered on the latter plate by means of a boss 26C., concentric with the shank 26h, and is of the same diameter as the stopcollar |46. The inner portion of said stop collar merges gradually with the inner end portion of the shank I4b to prevent the outer end ofthe spring 21 from seating thereon. The spring 21 forces the crank inwardly and thereby centralizes the knobs, or holds the same in` neutral positions.

When the spindle is rotated to unlock the door, that is, when the bolt I has forced the ejector inwardly, as shown in Fig. 2, the tumbler 26 will be forced outwardly against the action of the spring 21. As the tumbler is forced outwardly,

the forward side of the boss` 26c engages the inner end of the ejector simultaneously with the engagement of the end of the tumbler with the inner side of the ejector head -I 4a. The outward movement of the tumbler isA checked by the engagement of the outer side of the plate 2lia with the inner end of the tubular portion of ejector housing.

Each of the escutcheon plates 24 and 25 consists of concentric inner and outer discs a and b, the inner discs being fully designated, respectively, 24a and 25a in the drawing, and the outer discs, respectively, as 24h and 251. Both of the inner discs a are secured to the corresponding sides of the door by screws 28 (the screws 28, for securing discs 25a, only being shown).

The outer disc b, may be rotatable about the securedl inner disc,` and is intended primarily to cover the screws. The knobs are shown as screwed onto the spindle 23, and the inner ends of the knobs are seated inY central holes of the outer discs b, and against shoulders c at.the inner end of the holes. The outer discs b are thus held in position.

The mechanism above described is locked, that is, it may be held in such a position that the ejector I4 may not be forced outwardly by the knobs. A locking means for this purpose is shown as consisting of a locking member 3l which is l transverse slot 3| a which receives the spindle 2 3.

The locking member has a downwardly extending portion 3|b which is provided with an arm 32 which extends outwardly through the escutcheon plate 25 and is provided at its outer end with a button 32a. When the button is drawn outwardly the spindle 23 is permitted to rotate, but when it is forced inwardly, as shown by dotted lines in Fig. 2, it straddles the innermost crank arm 23h, (the crank arms supporting the throw portion 23a) preventing the spindle from rotating, and thereby preventing. the opening of the lock from the opposite side.

An opening 25d may be provided in the escutcheon plate 25, in line with the arm 32, or in such relation with respect to the locking member 3l, that a suitable instrument inserted in such hole, may force the locking member free of the crank arm to permit the knobs to be rotated. Or, if desired, a permanent unlocking rod (not shown) may be provided in the hole 25d.

Though I have shown and described a particular construction, combination, and arrangement of parts and portions, I do not wish to be limited to the same, but desire to include in the scope of my invention, the construction, combination, and arrangement, substantially as set forth in the appended claims.

I claim:

l. In a lock of the class described, a housing having a latch-receiving opening, a latch ejector movably mounted therein, one portion of the latter being normally held in the opening flush with the outside of the housing, a spring for resiliently holding said outer'porton of the ejector in said flush position,l and capable of allowing the ejector to be forced inwardly through the opening, and a rotatable spindle extending transversely with respect to the housing for forcing the lejector outwardly with the rotation of the spindle.

2,'In a lock of the class described, a housing having a latch-receiving opening, a latch ejector movably mounted therein, one portion of the latter being normally held in the openingush ing, a" spring .between the `housing and the tumbler :for forcing the latter toward the offset,`said tumbler being capableof being* forced, by the operating member, `toward theY ejector for forcing the latter `outwardly after being forced inwardly from its flush position.

3. In a lock ofthe class described, a housing having a latch-receiving opening, a latch ejector movably mountedtherein, one portion of the lat-` ter being normally held in the opening flush with the outside of the housing, a rotatable operat-` ing spindle member for `positively forcing the` ejector outwardly, and spring means for resiliently holding said outer portion of the ejector` in said flush position and the operating member in a neutral rotating p osition. 4. In a lock ofthe class described, a housing having an outer face,` a longitudinal bore inwardly from the face,"and `a shoulder at the inner portion of the bore, an ejector having a head reciprocally mounted in the outer portion of the bore, normally flushwith the face but shiftable inwardly, said ejector having a tubular shank extending inwardly into the bore and `beyond the shoulder, the inner portion ofthe shank having an abutment engageable with the inner side of the shoulder when the head is ush with the face of the housing, aspring in the bore around the shank and between the head and the front side of the shoulder for resiliently forcing the ejector to its cuterposition, an operating spindle having anaxial offset, a tumbler having a zhead engageable with the offset and having a shank `extending into theu inner end` of the ejector bular `portion extending backwardly therefrom,

said tubular portion having a longitudinal bore open at its outer end throughthe strike plate portion, the inner portion of the bore havingan` annular restricted portion forming ashoulder, a

` of the shoulder and the `head of the ejector flush with the outer face of the` strike plate portion ofthe housing. d l i 6. In a lock of the class described, a plastic housing having a strike plate portion and a tu-` bular portion extending backwardly therefrom,

said tubular portion having a longitudinal bore open at its outer end through the strike plate portion, the inner portion of the bore havingan` annular restricted portionforming a shoulder, a

plastic ejector mounted in the housing, said ejector `having an enlarged head retractible into the outer portion `of the bore and having a shank reciprocally mounted in the annular shoulder, the innerrportion of the ejector shank having a colhal-11eriirrlitingthe*outward movement/lef @the i *eijectorfa' `comfpressicnspring "aroundthe `ejector shank-#aridi betweenf'the head Wor the `jetter 1 and. the @none 'sise-nfL the shoulder; said-spring [ijfmall-lyiforblng the" collar against the rear "side irthersnoiutief-aridthe nnearestthe ejeetprnush i -with "th`eoj1teri face'tof 'the strike plateportion of the housing, an operatingmember having an l offset portion, a plastic tumblerhaving `a wide head and a shank, the shank being reciprocally l mounted in theejector shank, andacompression j spring ,positioned around the .tumbler shank and between the shoulder and the head for normally forcing the head against the offset portion, the end of the tumbler shank` and the head engaging respectively the ejector head and the inner end of the ejector shank when the tumbler isy forced outwardly by the operating member.

7. `In a lock `of the class described, a housing having an outer face,a longitudinal bore inwardly from the face, and a shoulder at the inner portion of the bore, an ejector having `:a head reciprocally mounted inthe outer portion of the bore, normally flush with the face but shiftable "inwardly, said ejector having a tubular shank extending inwardly into the bore and be-` yond the shoulder, the inner portion of the shank :having `an abutment engageable with the inner sideof the shoulder when the head is flush with the face of the housing, a spring in the bore aroundthe shank and between the head and the front sid'e of the shoulder for resiliently forcing the ejector to its outer position, an operating `member in the housing, a tumbler operatively engaging the operating member and provided with a shank extending into the inner end of the ejector shank, anda spring between the shoulder and the extended end of the` tumbler for normally forcing the latter into operative engagement with the operating memberi 8. In a lock `of the class described, a housing havingla strike plate portion and a tubular porthe inner portionof the bore having a restricted k portion forming a shoulder, an ejector mounted in the housing, said ejector having an enlarged head retractible into `the outer portion `of the bore and having a shank extending reciprocally through the shoulder, the inner portion of the ejector shank having a collar for limiting the outward movement of the ejector,v anda compression spring around the ejector shank between the head thereof and the front side of the shoulder, said spring normally forcing the collar against the rear side of the shoulder` and the head of the ejector flush with the outer face of the strike plate portion of the housing.

tion extending backwardly therefrom, said tubular portion having a` longitudinal bore lopen `at its outer end` through the strike plateportion, the inner portion of the bore having a restricted portion forming a shoulder, an ejector mounted in the housing, said ejector having an enlarged head retractible into the outer portion of the bore and having a 'shank extending reciprocally through" the shoulder, the inner portion of the ejector shank having a collar `for limiting the outward movement of the ejector, a compression spring around the ejector shank between the head ofthe ejectorand `the front side ofthe shoulder, said spring normally forcing the collar at its outer end through the strike plate portion,

9. In a lock of the classdescribed, a housing having a` strike plate portion and a tubular poragainst the rear side ofl the shoulderand the head of the ejector flush with the outer face of the strike plate portion of the housing, an operating member having an offset portion, a tumbler having a head and a shank, the shank being `5 reciprocally mounted in the ejector shank, and

a compression spring positioned around the tumbler shankk between the shoulder and the head for normally forcing the head against the oiset portion of the operating member, the headot the tumbler engaging the inner end of the ejector shank when the tumbler is forced outwardly by the operating member.

Y- t HARRY E. FENDRING. 

